The cat doesn't eat food. How many hours should I wait? And when do I have to see a doctor?
Last checked 2026-07-05
- If your adult cat hasn't eaten or barely eaten for 24 hours, see your veterinarian within that day. This number is the deadline. It's not time to wait for it to complete.
- Kittens under 6 weeks of age not eating for just 12 hours can be fatal. Contact your veterinarian immediately.
- Difficulty breathing, falling, convulsions, pale or yellow gums severe vomiting Can't urinate or suspected of eating poison or foreign substances Go to emergency immediately.
- During the call to make an appointment Offer small amounts of the same food, provide clean water, and write down the actual amount eaten. Do not add food, water, or medicine to humans.
- Obese cats are more at risk for fatty liver. But this condition can occur in all cats. Therefore, you should not allow yourself to starve to see symptoms.
No need to wait when there are dangerous symptoms.
Go to an emergency veterinary hospital immediately if your cat is having difficulty breathing, gasping for breath, falling over, convulsing, being unresponsive, very weak, pale, purple, or yellow gums, vomiting violently, abdominal pain, or straining to urinate but no urine.
If you suspect you've ingested medicine, toxins, poisonous plants, rope, thread, or toys, you don't have to wait to see symptoms. Do not induce vomiting yourself. Bring the label, picture of the plant, or the object in question to the fortune teller.
24 hours is a deadline, not a waiting time.
Cornell says not eating for as little as 24 hours continuously can affect the health of older cats. If this period is complete, see a veterinarian within that day. Even the cat looks normal. But if eating clearly decreases Have a congenital disease, are overweight, elderly, pregnant or a kitten. You should call as soon as you notice it.
Kittens under 6 weeks of age not eating for 12 hours can be fatal. For older kittens, there is no single number that works all. If you refuse many meals or are lethargic Contact your veterinarian the same day.
During contact with the veterinarian What can I do?
Separate cats in a quiet place and in a separate bowl from other animals. You will know how much you actually eat and drink. Offer small amounts of the same food you once liked in a clean bowl. Heat wet food enough to warm and develop its flavour. But stop if your cat becomes nauseous or turns away.
Place clean water in several places. Write down the time you last ate normally, how much you ate, vomited, urinated, and defecated. You can video your breathing, retching, or other abnormal behavior if it doesn't slow you down.
Do not fill food and do not give medicine yourself.
Do not feed with a syringe, spoon, or finger without your veterinarian's instructions. Because of the risk of choking into the lungs increase stress and causes the cat to hate food. Do not give medicine to humans. Medicines that stimulate appetite or anti-vomiting medication itself Because it may be toxic and not solve the root cause.
Don't assume that your cat is just picky eater or stressed. Causes can be from the teeth and mouth, kidneys, liver, pancreas, gastrointestinal tract, infection, pain, or foreign bodies. The real cause must be examined.
Why can't cats fast for a long time?
When a cat doesn't have energy The body mobilizes fat to the liver. If the liver can't handle it in time Fat will accumulate until the function is abnormal. It's called fatty liver disease in cats. The disease is severe and can be fatal.
Fat cats are more at risk. But it can happen to cats of all ages. Symptoms that can be found are thinning, lethargy, weakness, vomiting, drooling, and yellowing of the body or eyes. Treatment must correct the underlying disease and provide proper nutrition. Many cases require a feeding tube under the supervision of a veterinarian.
Frequently asked questions
Cats still eat snacks but not main food. Is that considered not eating?
You have to look at your total energy compared to what you eat normally. A few bites of snacks doesn't mean enough food. If the total quantity decreases clearly or continuously Contact your veterinarian.
What does it mean when a cat sniffs food and walks away?
May be nauseated, mouth sore, unable to smell Or you want to eat but have difficulty chewing and swallowing. You shouldn't diagnose yourself. Note the behavior and notify the veterinarian.
Can you heat wet food to eat?
Warm enough to be close to body temperature to enhance the scent. If the cat is awake and not vomiting. But it is just a way to help while contacting the veterinarian. It is not a reason to postpone the examination.
Can I feed with a syringe?
You shouldn't do it yourself because you risk choking and create food aversion. If necessary, your veterinarian will assess the safe method and dosage based on the cause of each individual.
Reference source: www.vet.cornell.edu · www.vet.cornell.edu · www.vet.cornell.edu · icatcare.org · www.vet.cornell.edu · vetmed.illinois.edu · www.msdvetmanual.com